Land ownership in Fairfax County in 1760 is shown on a map available at
https://www.arcgis.com/home/item.html?id=cca6b4a3ef644dbfa89e16b6feb515fe
This book accompanies the map, providing information on owners and tenants of land in Fairfax County. In 1760, the boundary of Fairfax County extended to Difficult Run.
Prepared by Beth Mitchell. Edited by Donald M. Sweig with an Explanatory Text, Appendices, and Source Lists by Beth Mitchell and Donald M. Sweig.